|Subject: Agencies that want to define new TAZs or alter
TIGER/Line 2000 TAZs
Date: Thu, 21 Jun 2001 12:09:00 -0400
From: "Nanda Srinivasan" <Nanda.Srinivasan@fhwa.dot.gov>
Several agencies have written to the CTPP Working Group asking: If TAZs defined in TIGER/Line 2000 can be altered/changed. Can an agency submit new TAZs in Urban areas based on TIGER/Line 2000 geography for CTPP 2000?
The CTPP Working Group met on June 14, 2001 to discuss these issues.
However, due to processing issues and schedule considerations, agencies
1. Cost: To change TAZs or define new TAZs, agencies must
2. Schedule: CTPP data will be processed for those agencies after
3. Exclusion of the changes from TIGER/Line database: There are
no plans or processes in place to include new TAZs in the TIGER/Line database.
Thus, the changes will not be reflected in TIGER/Line 2000 and it is unlikely
For more information, please contact Phillip Salopek, Census Bureau,
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